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<a name="GInitable"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
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<h2><span class="refentrytitle"><a name="GInitable.top_of_page"></a>GInitable</span></h2>
<p>GInitable — Failable object initialization interface</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GInitable.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GInitable.html#g-initable-init" title="g_initable_init ()">g_initable_init</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
</td>
<td class="function_name">
<a class="link" href="GInitable.html#g-initable-new" title="g_initable_new ()">g_initable_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="returnvalue">GObject</span></a> *
</td>
<td class="function_name">
<a class="link" href="GInitable.html#g-initable-new-valist" title="g_initable_new_valist ()">g_initable_new_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
</td>
<td class="function_name">
<a class="link" href="GInitable.html#g-initable-newv" title="g_initable_newv ()">g_initable_newv</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GInitable.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GInitable.html#GInitable-struct" title="GInitable">GInitable</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GInitable.html#GInitableIface" title="struct GInitableIface">GInitableIface</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GInitable.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/home/mclasen/gnome/share/gtk-doc/html/gobject/GTypeModule.html">GInterface</a>
    <span class="lineart">╰──</span> GInitable
</pre>
</div>
<div class="refsect1">
<a name="GInitable.prerequisites"></a><h2>Prerequisites</h2>
<p>
GInitable requires
 <a href="../gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>.</p>
</div>
<div class="refsect1">
<a name="GInitable.derived-interfaces"></a><h2>Known Derived Interfaces</h2>
<p>
GInitable is required by
 <a class="link" href="GNetworkMonitor.html" title="GNetworkMonitor">GNetworkMonitor</a>.</p>
</div>
<div class="refsect1">
<a name="GInitable.implementations"></a><h2>Known Implementations</h2>
<p>
GInitable is implemented by
 <a class="link" href="GCharsetConverter.html" title="GCharsetConverter">GCharsetConverter</a>,  <a class="link" href="GDBusConnection.html" title="GDBusConnection">GDBusConnection</a>,  <a class="link" href="GDBusObjectManagerClient.html" title="GDBusObjectManagerClient">GDBusObjectManagerClient</a>,  <a class="link" href="GDBusProxy.html" title="GDBusProxy">GDBusProxy</a>,  <a class="link" href="GDBusServer.html" title="GDBusServer">GDBusServer</a>,  <a class="link" href="GInetAddressMask.html" title="GInetAddressMask">GInetAddressMask</a>,  <a class="link" href="GSocket.html" title="GSocket">GSocket</a> and  <a class="link" href="GSubprocess.html" title="GSubprocess">GSubprocess</a>.</p>
</div>
<div class="refsect1">
<a name="GInitable.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gio/gio.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GInitable.description"></a><h2>Description</h2>
<p><a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a> is implemented by objects that can fail during
initialization. If an object implements this interface then
it must be initialized as the first thing after construction,
either via <a class="link" href="GInitable.html#g-initable-init" title="g_initable_init ()"><code class="function">g_initable_init()</code></a> or <a class="link" href="GAsyncInitable.html#g-async-initable-init-async" title="g_async_initable_init_async ()"><code class="function">g_async_initable_init_async()</code></a>
(the latter is only available if it also implements <a class="link" href="GAsyncInitable.html" title="GAsyncInitable"><span class="type">GAsyncInitable</span></a>).</p>
<p>If the object is not initialized, or initialization returns with an
error, then all operations on the object except <a href="../gobject-The-Base-Object-Type.html#g-object-ref"><code class="function">g_object_ref()</code></a> and
<a href="../gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> are considered to be invalid, and have undefined
behaviour. They will often fail with <a href="../glib-Message-Logging.html#g-critical"><code class="function">g_critical()</code></a> or <a href="../glib-Message-Logging.html#g-warning"><code class="function">g_warning()</code></a>, but
this must not be relied on.</p>
<p>Users of objects implementing this are not intended to use
the interface method directly, instead it will be used automatically
in various ways. For C applications you generally just call
<a class="link" href="GInitable.html#g-initable-new" title="g_initable_new ()"><code class="function">g_initable_new()</code></a> directly, or indirectly via a <code class="function">foo_thing_new()</code> wrapper.
This will call <a class="link" href="GInitable.html#g-initable-init" title="g_initable_init ()"><code class="function">g_initable_init()</code></a> under the cover, returning <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> and
setting a <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> on failure (at which point the instance is
unreferenced).</p>
<p>For bindings in languages where the native constructor supports
exceptions the binding could check for objects implemention <a class="link" href="GInitable.html" title="GInitable"><code class="literal">GInitable</code></a>
during normal construction and automatically initialize them, throwing
an exception on failure.</p>
</div>
<div class="refsect1">
<a name="GInitable.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="g-initable-init"></a><h3>g_initable_init ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_initable_init (<em class="parameter"><code><a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a> *initable</code></em>,
                 <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                 <em class="parameter"><code><a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Initializes the object implementing the interface.</p>
<p>This method is intended for language bindings. If writing in C,
<a class="link" href="GInitable.html#g-initable-new" title="g_initable_new ()"><code class="function">g_initable_new()</code></a> should typically be used instead.</p>
<p>The object must be initialized before any real use after initial
construction, either with this function or <a class="link" href="GAsyncInitable.html#g-async-initable-init-async" title="g_async_initable_init_async ()"><code class="function">g_async_initable_init_async()</code></a>.</p>
<p>Implementations may also support cancellation. If <em class="parameter"><code>cancellable</code></em>
 is not <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>,
then initialization can be cancelled by triggering the cancellable object
from another thread. If the operation was cancelled, the error
<a class="link" href="gio-GIOError.html#G-IO-ERROR-CANCELLED:CAPS"><code class="literal">G_IO_ERROR_CANCELLED</code></a> will be returned. If <em class="parameter"><code>cancellable</code></em>
 is not <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> and
the object doesn't support cancellable initialization the error
<a class="link" href="gio-GIOError.html#G-IO-ERROR-NOT-SUPPORTED:CAPS"><code class="literal">G_IO_ERROR_NOT_SUPPORTED</code></a> will be returned.</p>
<p>If the object is not initialized, or initialization returns with an
error, then all operations on the object except <a href="../gobject-The-Base-Object-Type.html#g-object-ref"><code class="function">g_object_ref()</code></a> and
<a href="../gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> are considered to be invalid, and have undefined
behaviour. See the introduction for more details.</p>
<p>Callers should not assume that a class which implements <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a> can be
initialized multiple times, unless the class explicitly documents itself as
supporting this. Generally, a class’ implementation of <code class="function">init()</code> can assume
(and assert) that it will only be called once. Previously, this documentation
recommended all <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a> implementations should be idempotent; that
recommendation was relaxed in GLib 2.54.</p>
<p>If a class explicitly supports being initialized multiple times, it is
recommended that the method is idempotent: multiple calls with the same
arguments should return the same results. Only the first call initializes
the object; further calls return the result of the first call.</p>
<p>One reason why a class might need to support idempotent initialization is if
it is designed to be used via the singleton pattern, with a
<a href="../gobject-The-Base-Object-Type.html#GObjectClass.constructor"><span class="type">GObjectClass.constructor</span></a> that sometimes returns an existing instance.
In this pattern, a caller would expect to be able to call <a class="link" href="GInitable.html#g-initable-init" title="g_initable_init ()"><code class="function">g_initable_init()</code></a>
on the result of <a href="../gobject-The-Base-Object-Type.html#g-object-new"><code class="function">g_object_new()</code></a>, regardless of whether it is in fact a new
instance.</p>
<div class="refsect3">
<a name="g-initable-init.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>initable</p></td>
<td class="parameter_description"><p>a <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> object, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> location to store the error occurring, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to
ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-initable-init.returns"></a><h4>Returns</h4>
<p> <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if successful. If an error has occurred, this function will
return <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> and set <em class="parameter"><code>error</code></em>
appropriately if present.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-22.html#api-index-2.22">2.22</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-initable-new"></a><h3>g_initable_new ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
g_initable_new (<em class="parameter"><code><a href="../gobject-Type-Information.html#GType"><span class="type">GType</span></a> object_type</code></em>,
                <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                <em class="parameter"><code><a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>,
                <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *first_property_name</code></em>,
                <em class="parameter"><code>...</code></em>);</pre>
<p>Helper function for constructing <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a> object. This is
similar to <a href="../gobject-The-Base-Object-Type.html#g-object-new"><code class="function">g_object_new()</code></a> but also initializes the object
and returns <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, setting an error on failure.</p>
<div class="refsect3">
<a name="g-initable-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object_type</p></td>
<td class="parameter_description"><p>a <a href="../gobject-Type-Information.html#GType"><span class="type">GType</span></a> supporting <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> object, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> location to store the error occurring, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to
ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>first_property_name</p></td>
<td class="parameter_description"><p>the name of the first property, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if no
properties. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>the value if the first property, followed by and other property
value pairs, and ended by <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-initable-new.returns"></a><h4>Returns</h4>
<p>a newly allocated
<a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> on error. </p>
<p><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GObject.Object][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-22.html#api-index-2.22">2.22</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-initable-new-valist"></a><h3>g_initable_new_valist ()</h3>
<pre class="programlisting"><a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="returnvalue">GObject</span></a> *
g_initable_new_valist (<em class="parameter"><code><a href="../gobject-Type-Information.html#GType"><span class="type">GType</span></a> object_type</code></em>,
                       <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *first_property_name</code></em>,
                       <em class="parameter"><code><span class="type">va_list</span> var_args</code></em>,
                       <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                       <em class="parameter"><code><a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Helper function for constructing <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a> object. This is
similar to <a href="../gobject-The-Base-Object-Type.html#g-object-new-valist"><code class="function">g_object_new_valist()</code></a> but also initializes the object
and returns <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, setting an error on failure.</p>
<div class="refsect3">
<a name="g-initable-new-valist.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object_type</p></td>
<td class="parameter_description"><p>a <a href="../gobject-Type-Information.html#GType"><span class="type">GType</span></a> supporting <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>first_property_name</p></td>
<td class="parameter_description"><p>the name of the first property, followed by
the value, and other property value pairs, and ended by <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>var_args</p></td>
<td class="parameter_description"><p>The var args list generated from <em class="parameter"><code>first_property_name</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> object, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> location to store the error occurring, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to
ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-initable-new-valist.returns"></a><h4>Returns</h4>
<p>a newly allocated
<a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> on error. </p>
<p><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GObject.Object][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-22.html#api-index-2.22">2.22</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-initable-newv"></a><h3>g_initable_newv ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
g_initable_newv (<em class="parameter"><code><a href="../gobject-Type-Information.html#GType"><span class="type">GType</span></a> object_type</code></em>,
                 <em class="parameter"><code><a href="../glib-Basic-Types.html#guint"><span class="type">guint</span></a> n_parameters</code></em>,
                 <em class="parameter"><code><a href="../gobject-The-Base-Object-Type.html#GParameter"><span class="type">GParameter</span></a> *parameters</code></em>,
                 <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                 <em class="parameter"><code><a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<div class="warning">
<p><code class="literal">g_initable_newv</code> has been deprecated since version 2.54 and should not be used in newly-written code.</p>
<p>Use <a href="../gobject-The-Base-Object-Type.html#g-object-new-with-properties"><code class="function">g_object_new_with_properties()</code></a> and
<a class="link" href="GInitable.html#g-initable-init" title="g_initable_init ()"><code class="function">g_initable_init()</code></a> instead. See <a href="../gobject-The-Base-Object-Type.html#GParameter"><span class="type">GParameter</span></a> for more information.</p>
</div>
<p>Helper function for constructing <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a> object. This is
similar to <a href="../gobject-The-Base-Object-Type.html#g-object-newv"><code class="function">g_object_newv()</code></a> but also initializes the object
and returns <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, setting an error on failure.</p>
<div class="refsect3">
<a name="g-initable-newv.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>object_type</p></td>
<td class="parameter_description"><p>a <a href="../gobject-Type-Information.html#GType"><span class="type">GType</span></a> supporting <a class="link" href="GInitable.html" title="GInitable"><span class="type">GInitable</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>n_parameters</p></td>
<td class="parameter_description"><p>the number of parameters in <em class="parameter"><code>parameters</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>parameters</p></td>
<td class="parameter_description"><p>the parameters to use to construct the object. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_parameters]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> object, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> location to store the error occurring, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to
ignore.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-initable-newv.returns"></a><h4>Returns</h4>
<p>a newly allocated
<a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> on error. </p>
<p><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GObject.Object][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-22.html#api-index-2.22">2.22</a></p>
</div>
</div>
<div class="refsect1">
<a name="GInitable.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GInitable-struct"></a><h3>GInitable</h3>
<pre class="programlisting">typedef struct _GInitable GInitable;</pre>
<p>Interface for initializable objects.</p>
<p class="since">Since: <a class="link" href="api-index-2-22.html#api-index-2.22">2.22</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GInitableIface"></a><h3>struct GInitableIface</h3>
<pre class="programlisting">struct GInitableIface {
  GTypeInterface g_iface;

  /* Virtual Table */

  gboolean    (* init) (GInitable    *initable,
			GCancellable *cancellable,
			GError      **error);
};
</pre>
<p>Provides an interface for initializing object such that initialization
may fail.</p>
<div class="refsect3">
<a name="GInitableIface.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody><tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GInitableIface.init"></a>init</code></em> ()</p></td>
<td class="struct_member_description"><p>Initializes the object.</p></td>
<td class="struct_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-22.html#api-index-2.22">2.22</a></p>
</div>
</div>
<div class="refsect1">
<a name="GInitable.see-also"></a><h2>See Also</h2>
<p><a class="link" href="GAsyncInitable.html" title="GAsyncInitable"><span class="type">GAsyncInitable</span></a></p>
</div>
</div>
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